22. There are 20 amino acids and 64 possible codons. Which of the following is closer to the actual number of different tRNA molecules in a cell?
A. 4
B. 16
C. 20
D. 61
E. 64
23. There are 20 amino acids and 64 possible codons. How many different eukaryotic aminoacyltRNA synthetases are there? A. 1
B. 16
C. 20
D. 61
E. 64
24. Which way are the amino acid and tRNA attached in a charged tRNA?
A. Amino acid-5'tRNA3'-AMP B
. Amino acid-AMP-3'tRNA
C. AMP-amino acid-3'tRNA
D. Amino acid-3'tRNA5'-AMP
E. Amino acid-AMP-5'tRNA
25. The anticodon that recognizes the initiation codon in translation is
A. 5' AUG 3'
B. 3' AUG 5'
C. 5' ACU 3'
D. 5' UAC 3'
E. 3' UAC 5'
26. The first amino acid incorporated into a growing polypeptide
A. In bacteria is methionine and it is also methionine in eukaryotes
B. In bacteria is tryptophan, while it is methionine in eukaryotes
C. In bacteria is N-formyl methionine, while it is methionine in eukaryotes
D. In bacteria is N-formyl methionine and it is also N-formyl methionine in eukaryotes
E. In bacteria is methionine, while it is N-formyl methionine in eukaryotes
27. In E. coli the IF3 forces tRNAf Met to bind with
A. The A site of the ribosome
B. The P site of the ribosome
C. The E site of the ribosome
D. IF1
E. IF2
22. There are 20 amino acids and 64 possible codons. Which of the following is closer to the actual number of different tRNA molecules in a cell?
A. 4
B. 16
C. 20
D. 61
E. 64
23. There are 20 amino acids and 64 possible codons. How many different eukaryotic aminoacyltRNA synthetases are there? A. 1
B. 16
C. 20
D. 61
E. 64
24. Which way are the amino acid and tRNA attached in a charged tRNA?
A. Amino acid-5'tRNA3'-AMP B
. Amino acid-AMP-3'tRNA
C. AMP-amino acid-3'tRNA
D. Amino acid-3'tRNA5'-AMP
E. Amino acid-AMP-5'tRNA
25. The anticodon that recognizes the initiation codon in translation is
A. 5' AUG 3'
B. 3' AUG 5'
C. 5' ACU 3'
D. 5' UAC 3'
E. 3' UAC 5'
26. The first amino acid incorporated into a growing polypeptide
A. In bacteria is methionine and it is also methionine in eukaryotes
B. In bacteria is tryptophan, while it is methionine in eukaryotes
C. In bacteria is N-formyl methionine, while it is methionine in eukaryotes
D. In bacteria is N-formyl methionine and it is also N-formyl methionine in eukaryotes
E. In bacteria is methionine, while it is N-formyl methionine in eukaryotes
27. In E. coli the IF3 forces tRNAf Met to bind with
A. The A site of the ribosome
B. The P site of the ribosome
C. The E site of the ribosome
D. IF1
E. IF2
Related textbook solutions
Related questions
Please please please I reallly need help with the following 5 questions.
Question 1
Which of the following is responsible for directing the prokaryotic ribosome to the +1 start site:
| a. | the 3' UTR | |
| b. | the AUG codon | |
| c. | Kozak sequence | |
| d. | Okasaki fragment | |
| e. | Shine Dalgarno sequence |
Question 2
In translation, mRNAs are READ in the:
| a. | 5' to 3' direction and polypeptide chains are synthesized amino to the carboxyl ends | |
| b. | 5' to 3' direction and polypeptide chains are synthesized carboxyl to the amino ends | |
| c. | 3' to 5' direction and polypeptide chains are synthesized carboxyl to the amino ends | |
| d. | 3' to 5' direction and polypeptide chains are synthesized amino to the carboxyl ends |
Question 3
Which of the following terms describes a tRNA to which an amino acid has been added:
| a. | charged tRNA | |
| b. | activated tRNA | |
| c. | stimulated tRNA | |
| d. | hydrolyzed tRNA |
Question 4
The ability of some tRNA to recognize more than one codon in mRNA is explained by which of the following:
| a. | a reading frameshift | |
| b. | a reading mistake | |
| c. | Redundancy Theory | |
| d. | Wobble Hypothesis |
Question 5
One essential component in eukaryotic mRNAs recognized by translation initiation factors is the
| a. | TATA box | |
| b. | AUG initiation codon | |
| c. | 7-methylguanosine cap | |
| d. | Shine-Dalgarno sequence |
